Fountain-pen.



G. H. CARTER.

FOUNTAIN PEN.

APPLICATION FILED OCT. 17, 1910.

Patented June 25, 1912.

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WITNESSES: 5

Specification of Letters Patent.

Patented June 25, 1912.

Application filed October 17, 1910. Serial No. 587,532.

To all whom it may concern:

Be it known that I, GEORGE HEBER CAR- ran, a subject of the King of Great Britain, residing at Richmond Hill, in the county of Queens and State of New York, have invented certain new and useful Improvements in Fountain-Pens, of which the following is a specification.

My invention relates to fountain pens, and particularly to that class of such pens as contain within themselves the means whereby they may be refilled with ink, and which are called self-filling fountain pens. The preferred type of such pens in connection with which I desire to em loy my invention, is that wherein the cap the pen acts as an exterior piston to draw the ink into the barrel through the nozzle.

The object of my invention is to produce a simple and economical construction of such device and one that shall be certain in operation and will easily permit cleansing.

Other objects are to insure that the refilling bore shall be automatically closed, when the pen has received its load of ink; also to prevent any leakage of ink when the suction of the piston is released.

.These and other objects which will a ear as the specification proceeds, I attam y the use of the devices illustrated in the accompanying drawings, wherein is represented a desirable form 1n which my invention may'be embodied.

In the said drawing Figure 1 is a longitudinal view of a fountain penillustrating my invention as applied thereto, parts being illustrated in section. Fig. 2"is a detailed view illustrating in section the preferred form of my invention. Fig. 3 1s a similar view illustrating a slight modification therein. Fig. 4 is a view similar to Fig. 3 illustrating the parts in a different position. Fi 5 is a cross-section on the line 55 of ig. 2. Fig. 6 is a cross-section on the line 66 of .Fig. 2. Fig. 7 is a plan view of the valve-retaining means and the seat for the seal.

In carrying my invention into effect I employ a valve which will easily yield to open the bore and which will automatlcally seat itself and close the bore when the pen has been filled with ink by the actionof the retained in position. In connection with said valve I also employ a suitable seal whereby when the pen is 1n use the air will be excluded from admission to the upper end of the barrel and thereby revent bleeding of the pen, and the said seal is conveniently seated by the ordinary end plug of the pen. As convenient refilling means I prefer to employ the cap of the pen which is illustrated as adapted to such use in my application, Serial No. 523,963, filed October 22, 1909, and allowed July 1, 1910, and 1n connection therewith some improvements are herewith provided.

Theparticular form in which my invention is illustrated in the present application comprises a valve A whlch I prefer to employ in the tapered form illustrated, as thereby a more certain closing of the bore B is effected. The said bore is likewise tapered and is so trued down as to insure a fit with the valve A. Attached to the valve A, I preferably place a stem at which is sufficiently smaller than the reduced end portion of B so that it shall pass easily through the bore and permit air to pass around its sides. Upon the upper end of the stem A is produced an enlarged retaining bulb a which is too large to pass through the bore B and therefore retains the valve A in place. The valve A and its stem at and the retainer a may be all made of one piece of any suitable substance such as brass, and the retainer a may be conveniently formed upon the stem A by enlarging the end thereof after it is inserted in place as by pressure from a pair of pliers. Attached to the valve A is a float C which may be of any suitable substance which will be raised by. the ink when :the barrel is filled and thereby seat the valve. For this purpose cork or very light wood may well be employed. Suita le means are provided for closing the bore airtight when the pen is filled and in use, and as illustrated in Fig. 2', such means comprise a seal D which has an annularbore d in which the stem and retainer are received when the pen wise provided with a longitudinal air-chem nel e. .Upon the periphery of the barrel is situated a packing f for a tight fit with the 'capG, and this packmg is conveniently inadeof, cork or soft rubber or other suitable'material. A retaining and enlar f is threaded onto the perip cry of t e barrel and serves to hold the packmag f in place and when desired by mitting the same nozzle of the pen the said cap may I 7 upon be screwed the ' ing the same and efiectuall D when 1 turned the up chamber (1 1 screwing. wn on the said ring, the packing maybe enlarged so as to maintain its fit with the cap. In 0 eration in connection with this form 0 my invention, the end plu E is' loosened up slightly, thereby relieving the seal D from to p s p will cause the ring its seat, and the cap G being applied and the perforation g therein close finger after ward, This being inserted in the be drawn up by hand, from the interior of the wherellllponthe air I pen be drawn out by the piston throu htfieboreB' around the t fro ring d. and seal ugh the channel e in the end plugI This will continue until the ink shall reac theffloat 0, W11 n the said float will lsed andwill seat the tapered valve A in the bore B, prrlelvent' any further draw- I e cap may then be withdrawn whereupon the seal D will automatically be seated b atmospheric pressure and will prevent the v eakage of'ink at the nozzle end of the pen. The end plug E may there+ down until it pr upon n the said seal e ring (1 compress- ,holding the ug E has been end of the contact m the bulb y enlargement a and unseat thevalve A. The entrance of the to the rear end of the barrel 'will thereby be'prevented and ink seal ,D whereu" will be forced againstt Y may 'be fromth nozzle' wan s bleed- A mo trat'edin ri s-emu, In-

formuthe seal U is uponf l seat b andthe soft-ring 'd a a .1 i seal is retamed'm position'b a washer d which maywell-be'made o 7 hard rubber parallelslots' d-- for and remo 1t. washer is; thread exteriorly v bore of the barreL- Ithisaloos'e fit with its thread and when theplng E is inserted into the threaded end 'a. piston.

JIS well adapted to this purpose. pressure and per-' d to'be held loosely on by -the, it is pushed inward,..and the "What'I claim isf- --1.,In afountam with a tapered bore at its rear end, a tapered valve adapted to close said form-of my jinventio n is illus-k an is received in'the threaded end 1 itsf stem e bears against the said" washer which has suflicient phivyii to press the seal D firmly 'to its seat. en the plug E is loosened up the said washer springs slightly ermitting the seal D to rest with sufiicient ooseness'on its seat so that the air will ass the same when the cap G is use as around In this form the valve is not'unseated'by the seal. D but it may be unseated I if it sticks by applyingl thefcap G with the perforation g'close ,w ereupon the air will force the valve A from its seat. This operation may also be employed in connection with .the device illustrated in Figs. 1 and 2 if desired. In this form also the seal D will automatically close the rear end of the bore and prevent leakage at the nozzle when the cap G is opened or withdrawn. For the seal and. its retainin plug, I prefer to emp 0y hard rubber which I prefer to employ'the perforated cap G for the reasons stated in my former ap lication, to wit: That the sad cap may he applied to the rear of the-barrel-and forced to its innermost osition with the perforation open where yan inkremaining in the barrel of the pen w not be forced out, and upon closing the saidperforation the barrel acts as an exterior iston to fill the pen with ink.

In all the orms in which I have illustrated my invention the parts may easily be cleaned by forcing the cap G up and down with the perforation g closed, whereupon if the nozzle is immersed. in water the said water will be pumped'in and out and will effectually clean the barrel. The rear parts may also be cleaned by removing the end E whereby,

washer and the end plug in the form illustrated in 1gs. 1 and 2, the seal D and ring 11 may lifted out for cleaning, or in the form illustrated in Fig. 3 the washer d inay be unscrewed and the seal D may then be taken out for cleaning. 7

,Although I have described with great articularity the construction of my pen, I 0' not regard it'asnecessarily limited to the precise shape or form or construction of lar material stated, as equivalents therefor thepartsillustrated, nor yet to the particu may besub'stituted within the limits of the appended claims without departingfrom the invention.--

' pen, a barrel provided bore, a stemion said valve of less'size' than said bore and a support on" saidstem, a' seal recessed celve said stem and aseat therefor in sand barrel, and means 01; holding said seal to a r 3 r with a tapered bore at its rear end, atapered valve adapted to close saidbore, a stem on to re-' a barrel provided I i said valve of less size than said bore, and a supporton sald stem, a float oarryin said valve, an automatically acting seal adapted 'to close the outer end of said bore, and a with a tapered bore at its rear end, a tapered valve adapted to close said bore, and means for preventing the withdrawal of said valve from said bore, a float carrying said "alve, an automatically acting seal adapted to close the outer end of said bore and a seat therefor surrounding the reduced end of said bore, and means for holding said seal to its seat.

4. In a fountain pen, a barrel provided with a tapered bore at its rear end, a tapered valve adapted to close said bore, a float-carrying said valve, and a support for said valve adapted to prevent its withdrawal "from said bore, a seal ada ted to close the outer end of said bore an a seat therefor at the reduced end of said bore, and a screw plugadapted to close the rear end of the barrel and hold the seal toits seat.

5. In a fountain pen, a barrel. having a tapered bore, a tapered valve, a stem thereon and an enlargement on said stem ada ted to prevent the withdrawal of the valve t i'om said bore, a float attached to said valve, a seal and an expansible packing between same and said bore,

ad ted to close the end of the barrel and hol said seal to its seat.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

GEORGE HEBER CARTER.

Witnesses: HENRY M. TURK,

FRED WHITE.

and a threaded plug 

